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A.P. Psychology 4 (E)
A.P. Psychology 4 (E)

... o The system for sensing the position and movement of individual body parts ...
Neurons
Neurons

... causes the axon terminal to release a neurotransmitter into the synapse ● The synapse is the gap between the axon terminals and the next cell ● A neurotransmitter is a chemical that is used to transmit an impulse to another cell ...
Neurons - Cloudfront.net
Neurons - Cloudfront.net

... causes the axon terminal to release a neurotransmitter into the synapse  The synapse is the gap between the axon terminals and the next cell  A neurotransmitter is a chemical that is used to transmit an impulse to another cell ...
Nervous system 1 - INAYA Medical College
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... Is located below thalamus It synthesizes & secretes certain hormones which in turn stimulate or inhibit the secretion of pituitary hormones It controls body temperature, hunger, thirst ...
Divisions of the Nervous System
Divisions of the Nervous System

...  “Information” travels within the nervous system as propagated electrical signals (action potentials)  The most important information (vision, balance, motor commands) is carried by large-diameter, myelinated axons ...
Nerve cells - Dr Magrann
Nerve cells - Dr Magrann

... b. Parasympathetic division Sensory (afferent) signals picked up by sensor receptors. They are carried by nerve fibers of PNS to the CNS Motor (efferent) signals are carried away from the CNS. They innervate muscles and glands 1. Receive a signal. Can be any type of stimulus (change in environment, ...
Vocab: Unit 3 Handout made by: Jessica Jones and Hanna Cho
Vocab: Unit 3 Handout made by: Jessica Jones and Hanna Cho

... Behavior genetics: the study of the relative power and limits of genetic and environmental influences Environment: every external influence, from prenatal nutrition to the people and things around us Chromosomes: threadlike structures made of DNA molecules that contain genes DNA: (deoxyribonucleic a ...
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... • Respond to continuous touch or pressure ...
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...  Smaller basal cells allow passage of multiple axons through gaps in the plate o Each cell has a single descending neurite to the mucosa into which olfactory cilia project  The actual ‘receptive units’ are contained within the olfactory cilia o Uniquely for neural cells, olfactory afferents have a ...
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ACTION POTENTIALS

... induce a small electrical current that flows along the membrane leaking out of the cell ...
Chapter 48: Neurons, Synapses, and Signaling 48.1: Neuron
Chapter 48: Neurons, Synapses, and Signaling 48.1: Neuron

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Neurotoxins and the Neuromuscular Junction

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neurons - haltliappsych

... biological battery ready to be discharged. It takes about onethousandth of a second for a neuron to fire an impulse and return to its resting level. A maximum of 1,000 nerve impulses per second is possible. However, firing rates of 1 per second to 300-400 per second are more typical. ...
Nervous System - Lemon Bay High School
Nervous System - Lemon Bay High School

... – Space in between neighboring neurons. – Contains neurotransmitters; chemicals that are released to control info/activity in brain. Types of Synapses • Neuron-to-Neuron Found throughout Nervous System ...
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... neurons exert their effects by interacting with special protein regions in membranes called receptors. Receptors only interact with molecules that have specific configurations. The receptors are also targets for specific types of neurotransmitters, hormones, and drugs (see opiate receptors example i ...
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... o  Structure: most inferior part of the brain stem; merges into spinal cord o  Functions: heart rate control, blood pressure regulation, ...
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EXPLORING PSYCHOLOGY (7th Edition in Modules) David Myers

... Action Potential Properties All-or-None Response: A strong stimulus can trigger more neurons to fire, and to fire more often, but it does not affect the action potentials strength or speed. Intensity of an action potential remains the same throughout the length of the axon. ...
B6 – Brain and Mind Go to the BBC Bitesize website from the school
B6 – Brain and Mind Go to the BBC Bitesize website from the school

... What are the two types of effectors found in multicellular animals? a. ________________________________________ b. ________________________________________ As well as producing a rapid response, what other characteristic do nerve impulses have? __ ____________________________________________________ ...
Nervous System
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... • Made up of a cell body and branches called dendrites and axons – Dendrites receive messages from other neurons and send them to the cell body – Axons carry messages away from the cell body ...
Peripheral Nervous System
Peripheral Nervous System

... • Motor Neurons carry impulses away from CNS to effectors such as muscles and glands • SUPPORT CELLS Of Nervous System • Schwann Cells: peripheral nervous system— produce myelin sheath • Oligodendrocytes: CNS; myelinating cell • Astrocytes: CNS; form scar tissue, mop up excess ions, etc, induce syna ...
Regulation powerpoint File
Regulation powerpoint File

Biology 12 Nervous System Major Divisions of Nervous System 1
Biology 12 Nervous System Major Divisions of Nervous System 1

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Stimulus (physiology)



In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.
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